Automatically-controlled pump.



P. F. GOBHRING.

AUTOMATICALLY CONTROLLED PUMP.

APPLICATION FILED OCT. 23, 1912,

1,068,122, Patented July 22, 1913.

2 SHEETSSHEBT 1,

r. F. GOBHRING. AUTOMATICALLY CONTROLLED PUMP.

APPLICATION FILED OCT. 23 1912v 1,068, 1 22, Patented July 22, 1-913.

2 SHEETSSHEET 2.

w I Z! :9 5 2g 26 WMM gnwntoz W l $511M Guava A To all ztmay concern: Be it known that I; PETER and useful Improvements in STATES PA EN FF CE? rarer. F'. G EHR NQ F GUTTENBERG, NEW JnRsEY.

,AfiTOHrATIoApLY-CONTRQLLED run}.

I Specification Letters Patent. "t pat en ti d lf lsr 1913 Application filed October 23, 1912. Serial No. 727,275. i

a F. some, a m u of the United States, residing at Guttenberg, in the county of Hudsonand'State of New Jersey, haveinvented eertain' new Automatically Controlled'Pfu ps, of which the following is a full andfclear specification, 1

This invention relates to means for auto matically controlling pumps for periodically raising the pressure in fluid-dispensing systerhs and has for, its primary object to provide suitablea-nd efficient means which can be simplyand durably constructed which willbe positive inits operation, and which willbe ecoiiomical inits consumption of power. j 'f 4 .One' of theobjects of the present invention isto provide improved pump control means which will. cause the pump. to operate for a A predetermined length of time during which I the pressure is raised in excess of that actually required and according to which method of operation the pump is operated less frequently and wit-h in creased efficiency during each operation. v

Another object is tomake it possible to lengthen or shorten the duration of such period of running'to .1 neet the requirements of ditl'er'ent'conditions under which the system is operated.

Another object -is to provide simple and etlicient means for varying the critical pres sure point at which the pump is automatically started- Other and further objects will appear in the specification and be specifically pointed out in the appended claims, reference being had to the accompanying drawings exemplifying the invention inits adaptation to a beverage dispensing system.

. In the drawings, Figure 1' isa side elevation of a beer pump, embodying my improvements; Fig. 2- is an end elevation of the same; Fig.3 is 'a fragmentary detail 1n plan view; Fig. 4 is a wiring diagram. Fig. 5 is a fragmentary elevation of the adjustable Bourdon supporting means, parts being broken away .and parts shown in section.

; Referring more particularly to the draw-.

lugs and to the embodiment shown therein, the pump comprises three cylinders 1, within which reciprocate pistons (not shown) to which power is transmitted by pitmen 2, from a crank shaft 3, said crank shaft being -]'ournaled in standards 4, rigidly mounted on'a base plate Keyed to the crank shaft 3 is a spur gear 6, Withwhich meshes a pinion .7 keyed to the spindle 8 of a motor 9, the driving power in" this embodiment being electrically operated and controlled. Also" keyed to the crank shaft 3 is a-driving pin; ion 10 meshing 'withalbevel. gear 11 of a short shaft 12, said shaft beingj-ournaled in a standard '13.. Also keyed. to the shaft 12, is a inion 14 meshing with a spur gear, 15, whici is keyed to a shaft 16. .Rigi'dly mounted upon the gear 15 in a suitablemanner to space it therefrom, is a rotary contact. 17 having a cam-like periphery and with beveled edges extending around such periphery. As shown in Fig. 2, the cam-like contact 17 increases in ra ius in an anticlockwise direction for a purpose to be presently made clear. Slidably .en'gaging the periphery of said cam 17, is a resilient contact 18. which is secured at 19 to the base 7 block 20.

Projecting laterallyfrom the standard 13',

-is a pivot pin 21,- upon which is pivotally mounted a trigger 22, whichcari'ies an arm 23 of insulating material, said arm 23 being provided with a pad 21 which is' normally in position to hold. the spring contact 18 away from the rotary contact. 17 when the, smallest radius .of the contact 17 is adjacent thereto. A spring 25 tends to 'maintain the arm 23 with the pad 24 beneath the contact 18 until such time when the pressure drops below thecritical point. A Bourdon tube 26 which'is subject to the pressure produced by the pump, has its outer end connected to a link 27, which is pivotally connected to the trigger 22. Said outer endof the Bou'rdon tube 26 and the link 27 form in effecta toggle for-operating the trigger 22; Thus when the pressure of the system drops, the parts assume the positions shown in dotted lines in Fig. 1, and the pad 24 is removed from under the upper extremity of the contact 18, permitting said extremity to engage the periphery of the rotary contact 17, at approximately its smallest radiusf This closes the circuit and starts the motor 9. The contact 17 being constantly driven by the motor 9 by means of geared connections shown on the drawings, will continue its rotation fora complete turn or-until the extremity of the contact 18 reaches the" when said contact "18 is permitted'to drop inwardly toward the shaft 12. During this interval, however, the pressure has risen in the system and the arm 23 with pad 24 has returned to normal position, this serving to separate the contacts 17 and 18 until the automatic release again occurs. At each operation of the pump, the pressure in the system is or may be raised considerably above the critical pressure point atkwhich "the; Bourdon tube causes the release of spirin'g contact. 18 and by means d: the c ange gearing interposed between the-crank shaft 8 and shaft 16 any definite and predtk itcrmined amount of compression witlnii cer-/ 'tain limits can be obtained. Q Y

. In order to provide simple and efli ei t' means for varying theaction of the-B tirdon tube 26, said tube is mounted to be moved vertically. For this purpose, afost has secured thereto inany suitable nujn ber such as by brazing, spaced platest31 which are provided with slots-33.-- Extendw ing through the slots 33;, are set screws 32 which are threaded into a lug formed on the- Bourdon tube 26, 'A- pointer 34 which moves up and. down with the Bourdon tube,

, is adapted to register with a'scale onone of the plates-31. .A simple representation of a wiring. diagram is shown in Fig; 4, the -'motor armature 35 being in running contact with brushes 36. One'of' said brushes 1 is. connected by a line wire 37 with a spring contact 18', which has sliding contactwith' the lateral face of the armature-35, and the other of said brushes isconnected with spring contact 18 through field coil. 38 and line Wire 39.

'What Iclaim is:

1. In a device of the character described, the combination with a pump, of a motor for driving said pump, a contact rotated by f said motor, a second contact, and pressure operated means for controlling the movement of said second contact. f

2. In a device of the character described, a pump, a motor for driving the pump, a

' rotatable contact geared to said motor, a

contact movable into and out of engagement with said rotatable contact, and pressure swam operated means for controlling. v r;

ment. v v

3. In a device of the'character described, a pump, a motor for driving 'said'pump, a rotary cam-like contact geared to saidmotor, a spring contact adapted to slidably engage said rotary contact, a trigger-adapted to hold said-spring contact away from said rotary' cam, and pressure operated means for moving said'trigger.

4-. In a device of the character described, a pump, a motor fo'r drivingthe pump, a otatable contact geared to said motor, a.

out-act movable into and out ofengagcment with said rotatable contact, and pressure operated means for controlling such 'move ment,' said controlling means comprising- 1'? lever adapted to hold said .movable contact, and a Bourdontube for moving said lever.

5. Ina device of the character described; a pump, a motor for driving said pump, 'a

rotary foam-like contact geared to said motor, a spring contact adaptedtoslidably engage'said rotary contact, a trigger adaptedto' hold said spring contact away .fronl' said rotary cam, and pressure operated means for. moving said trigger, said rotary", cam being adaptedto automatically disen gage itself, from the spring contact.

6.. In a device of the character a pump, a motor for driving. said pump, a

said spring contact away from'the rotary.

contact, pressure operated'm eans for oper ating said trigger, and means for ad usting the critical pressure point of said pressure operated means.

PETER F. GOEHRING. Witnesses ROY MACNAIR, ,WM. E. KNIGHT.

the character described, 

